anyone looking to spend hard earned money on a sub-par ozone genny would do well into looking up how to build your own on the cheap..spend 25-30 bucks for a tranny on ebay, get two wires coming out of the tranny, and a microscope slide (a wide one)..take some metal mesh (aluminum foil rumoured to work, but i didnt like it) hook a wire from the tranny up to each piece of small metal mesh, 2 pieces..stick both pieces of mesh on either side of the glass slide (ceramic works too)..one on one side, one on the other, they should line up with each other though..make sure not to get the mesh too close to the edges or it will arc on you..when you get them lined up on the glass, wrap it up with vinyl tape and you good to go